[marypublic]

Seriously? Have you not heard of side channel and timing attacks? This is called information leakage and is a big deal. Because it is not common/easy now doesn't mean it won't be in the future. The nature of information disclosure (whether data or metadata) is that people find "impractical" methods of accessing information we might prefer they not have, then make them practical. It may also be the case that the researchers cannot make it practical, but that doesn't mean there aren't actors who can and possibly have already done this.

This is a very useful article OP, thank you for posting